Binding-post.



WESTON BINDING POST.

APPLICATION man FEB. 20. 1917.

1,234,840, Patented July :31, 1917.

UNITED strn'rns rt arena @FFIC-E.

EDWARD F. "VES'IGN, OF ELIZABETH NEW JERSEY, ASSIGNUR, IO WESTON ELECTRICAL INSTRUMENT COMPANY, OF NEWARK, NEW JERSEY, A CORPGRATIGN OF NEW JERSEY.

BINDING-POST.

Specification of Letters Patent.

1,234,840, Patented July 31, 1917.

Application filed February 20, 1917. Serial No. 149,783.

To all whom it may concern." upper end of which after the split ring it, 55

Be it known that I, EDWARD Wnsroiv, a citizen of the United States, residing at Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Binding-Posts, of which the following is a specification.

This invention relates to binding-posts and is concerned partici larly with means whereby accidental dislodgment of the movable member is prevented, these means however permitting such disengagement upon the application of sufficient force.

H'eretofore binding-posts have been made either with non-removable heads or with heads which came ofi" freely, but I am not aware that any binding-post has ever been provided withmeans for retarding {or making ditlicult the removal of the head, hereinafter described.

The advantages of this form of post are that the head. may be removed for inspection and cleaning ofcontact surfaces; that in case of damage to the insulating material or finish of the head, a new one may be substituted with great ease, (which is not the case with the non-removable type); that all types of cable terminals may be used, in'cluding those commonly known as eye terminals, in which it is necessary to remove thejhead and slip the terminal over the stud; and that the spring retarding feature prevents the liabilityof loss of the head. during transit;

The invention is set forth in the specification and accompanying drawings in the resilient colot' the post has a lower threaded aperture '2" and an enlarged interior chamber 8, the

thread portion 4, a reduced and :1 preferably,

to be later described, has been inserted therein is closed by a cap 9, held in position by an annular hp 10 of the head 6, whichlip 1s staked over the edge of the cap. The outer face of the head 6 is preferably knurled and may be of metalor insulation (see Fig; 3). In Fig 3, the head comprises an inner metallic portion 11, which is surrounded by an outer insulating portion 12, preferably molded in place. In other respects the invention as shown in Figs. 2 and 3 is the same. I

lVithin the chamber 8, is located the resilient windlassshaped split collar 17, the

outer diameter of which is slightly less than a recess 18 therein, into which the portion 5 of stud 4 passes as the head 6 is screwed down on the stud 4.

To the operation of the device, as the head 6 is threaded onto stud 4:, the upper knoblike portion it progresses into said chamber, "contacts with the lower flared edge of collar 17. and

pushes the collar before it. 'VVbcn the collar 17, is. forced far enough up into chamber 8,

its upper edge contacts with the shoulder which 9', and the movement of the collar is Figure 1 is a plan view of the bindingstopped. Clhcreafter, as the head 6 is furpost; ther screwed onto stud 4, the knob-like por- 40' Fig. 2 is. a central vertical section there" tion 5 of the stud is forced through the inner aperture of collar 1?, which yields slightly,

allowing the head 5 to pass thi-irethrough into recess 18, the collar then embracing the portion 4'1 of the stud below the head.

When the head 6 is unscrewed from stud l, the lowerrounded edge of knob 5 contacts with the upper flared edge of collar 17 and holds it. down until the collar abuts the snoulder 8 In turther unscrewing head 6 from stud l, the knob 5 is again forced through the inner aperture in collar 17,

which yields and releases the stud, so that the head can be entirely removed, the collar 17 being however permanently retained In its lowest position it rests 75 enters the chamber 8 and, as 85 tion will not cause the head 6 to he acciden tally unscrewed from stud +l, since it takes a positive and continuous motion through several turns of head (5 to force portion 5 through the collar 17. The head 6 can, without disengagement from the stud 4, be sufficiently separated from the cooperating member 16, to permit the insertion therebetween of the conductor with which electrical connection is to he made. If an eye-terminal is to be connected, the head can be removed and the eve of the terminal placed over the stud 4. i A modified form of the device is shown in Fig. 5. In this form, the' retarding mecha nism is contained in the body 20, which has within it a chamber .21. The head 22 has a screw-threaded stud extending through a corresponding gfcrew-threaded opening in the top of the body .20. and has. as in the other form of the device. a reduced portion 24, and a knob-like portion 25. The body 20' is secured on a screw-threiuled stud 26 having a cap 27, inserted into an opening, in the base of the body portion. a lip 28 being staked over the outer edge of the cap. The operation of this form of the device will be readily understood from the foregoing description. The dimensions of the chamber 21 are such that the head can be unscrewed, without detachment, far enough to permit a conductor to be inserted and'clamped between the head and the body; while if desired, the head can be removed. and an eyeterminal located over the stud 23, and similarly clamped between the head and body.

It will he readily understood that 111V invention is not limited to thc' precise orm,

construction and arrangement; of the parts shown as modifications aml these particulars will readily suggest themselves to those skilled in the art.

From the structure disclosed it is apparent that the parts'are simple. light and easily replaceable, and may be constructed of any suitable material.

l claim:

1. binding-post comprising two cooperating clamping: cl'cnu-nts. one having an interior chamber and the other a stud extending into said cham er. and resilient means within said chamber ctaipcrating with chamber and resilient means within said chamber in engagement with said knob'like end of the stud to restrain the removal of said element from said stud. 3. A binding-post comprising a member having an interior chamber, a resilient collar within said chamber adapted to move freely therein, a stud having a lrnob-like end adapted to he moved into and out of said chamber. said knob-like end being adapted to he forced through said resilient collar.

4. binding-post 'comprising a member having an interior chamber with upper and lower shoulders. a stud having a knob-like end adapted to project into said chamber, a resilient collar within said chamber, said collar having an outer diameter less than that of the chamber and an inner aperture of less diameter than the knob-like end of said stud. said lcnobdike end of the stud adapted to be forced through the inner aperture of said collar in its upward movement when the collar abuts against the upper shoulder and in its downward movement when the collar abuts against the lower shoulder.

5. A binding-post comprising a member having an interior shouldered chamber, a resilient split eollarretained within said -chamber but adapted to move therein, a stud having a knob-like end adapted to be moved into or out of said chamber, said re silient collar being adapted to yield and embrace the knob-like portion of the stud at the limit, of its upward movement within said chamber. and to yield and release said stud at the limit of its downward movement within the chamber. i 6. A binding-post comprising a member having an interior shouldered chamber, resilient means within said chamber adapted to move freely therein, a stud having a knoblike end adapted to be moved. into or out of said chamber, said resilient means being adapted to yield and embrace the knob-like portion of the stud at. the limit of upward movement ,of said resilient means within said chamber, and to yield and release said stud at the limiter downward movement of said resilient means within the chamber.

in testimony whereof I atiix rnv signature.

EDW. F. WESTON. 

